However, a study targeting adults reported an increasing trend of asthma patients due to COVID-19, and a longer treatment period was required when diagnosed with COVID-19 [ 17 ].
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Comparing pre- and post-COVID-19 chronic allergy prevalence in children using National Health and Nutrition Examination Survey in 2019 and 2021.
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Regarding the living environment, the type of housing did not reach statistical significance in either year.